The specific flaw exists within the ebus-3-3-2-6.dll module responsible for parsing GIOP requests for multiple processes. While parsing the first packet the function OBGIOPServerWorker::extractHeader trusts the provided size of the next packet and attempts to re-allocate a buffer.
By providing a large enough value an integer overflow can occur and the buffer can become undersized. A later memory copy using the original value specified in the packet can copy controlled data to the heap buffer. The affected services spawn multiple threads frequently enough that an attacker can theoretically win a race condition by sending multiple requests thus forcing the process to access the corrupted memory while the overflow is occurring. Successful exploitation would lead to remote code execution in the context of the SYSTEM user.

-- Vendor Response:
SAP has issued an update to correct this vulnerability. More details can be found at: